716 citations · 719 across the 11 of their papers we have counts for
11 papers
Diffusive Relaxation of Participation Entropy in U(1)-symmetric Dynamics
Hanchen Liu, Tianci Zhou, Xiao Chen
Participation entropy (PE) quantifies the spread of a many-body wavefunction across configuration space. While PE relaxes rapidly in generic chaotic systems, we show that $\mathrm{…
Critical behaviors of magic and participation entropy at measurement induced phase transitions
Eliot Heinrich, Hanchen Liu, Tianci Zhou +1
We study the participation and stabilizer entropy of non-unitary quantum circuit dynamics, focusing on the critical line that separates the low-entanglement spin-glass phase and th…
Measurement-and Feedback-Driven Non-Equilibrium Phase Transitions on a Quantum Processor
Zhiyi Wu, Xuandong Sun, Songlei Wang +8
Mid-circuit measurements and feedback operations conditioned on the measurement outcomes are essential for implementing quantum error-correction on quantum hardware. When integrate…
From Quantum Circuits with Ultraslow Dynamics to Classical Plaquette Models
Vikram Ravindranath, Hanchen Liu, Xiao Chen
We introduce a family of hybrid quantum circuits involving unitary gates and projective measurements that display a measurement-induced phase transition. Remarkably, the volume-law…
Magic transition in monitored free fermion dynamics
Cheng Wang, Zhi-Cheng Yang, Tianci Zhou +1
We investigate magic and its connection to entanglement in 1+1 dimensional random free fermion circuits, with a focus on hybrid free fermion dynamics that can exhibit an entangleme…
Coherent error induced phase transition
Hanchen Liu, Xiao Chen
We investigate the stability of logical information in quantum stabilizer codes subject to coherent unitary errors. Beginning with a logical state, we apply a random unitary error…
Entanglement Transitions in Noisy Quantum Circuits on Trees
Vikram Ravindranath, Yiqiu Han, Xiao Chen
Decoherence is ubiquitous, and poses a significant impediment to the observation of quantum phenomena, such as the measurement-induced entanglement phase transition (MIPT). In this…
Plaquette Models, Cellular Automata, and Measurement-induced Criticality
Hanchen Liu, Xiao Chen
We present a class of two-dimensional randomized plaquette models, where the multi-spin interaction term, referred to as the plaquette term, is replaced by a single-site spin term…
Measurement induced phase transitions in quantum raise and peel models
Eliot Heinrich, Xiao Chen
We present a quantum circuit model which emulates the interface growth of the classical raise-and-peel model. Our model consists of Clifford unitary gates interspersed with project…
Quantum Entanglement Phase Transitions and Computational Complexity: Insights from Ising Models
Hanchen Liu, Vikram Ravindranath, Xiao Chen
In this paper, we construct 2-dimensional bipartite cluster states and perform single-qubit measurements on the bulk qubits. We explore the entanglement scaling of the unmeasured 1…
Quantum Zeno Effect and the Many-body Entanglement Transition
Yaodong Li, Xiao Chen, Matthew P. A. Fisher
We introduce and explore a one-dimensional "hybrid" quantum circuit model consisting of both unitary gates and projective measurements. While the unitary gates are drawn from a ran…